This is a great tool for diving, camping, boating, fishing and the garage. Line cutters are very sharp, but extremely safe to use. The cutting-edge surface is protected by a heavy-duty brightly colored handle for sure grip and protection from the blade. Just capture the line with the blades protector loop and pull, the line is cut instantly. The Blue Reef Line Cutter has an eyelet for attachment of a lanyard and comes with two spare replacement blades.